3MS8
Enzyme-Substrate interactions of IXT6, the intracellular xylanase of G. stearothermophilus.
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2Q8X | PDB ENTRY 2Q8X |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 293 | 0.1M sodium cacodylate pH=6.5, 1.9M soduim acetate, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.47 | 64.52 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 169.389 | α = 90 |
b = 80.081 | β = 91.5 |
c = 79.026 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | ADSC QUANTUM 4r | 2002-12-05 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE ID14-4 | 0.939 | ESRF | ID14-4 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym I (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | ||||||||
1 | 1.7 | 19.89 | 97 | 0.05 | 15.3 | 2.88 | 319380 | 110960 | 15.3 | 20.4 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 1.7 | 1.73 | 88.5 | 0.161 | 4.7 | 1.76 | 5019 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | Its 2Q8X only one point mutation, using its phases doing rigid and annealing | THROUGHOUT | PDB ENTRY 2Q8X | 1.7 | 19.89 | 107077 | 107077 | 5384 | 92.9 | 0.196 | 0.209 | RANDOM | 30.1 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-13.02 | -2.02 | 17.81 | -4.79 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
DIHEDRAL ANGLES | 22.1 |
BOND ANGLES | 1.3 |
IMPROPER ANGLES | 0.8 |
BOND LENGTHS | 0.005 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5385 |
Nucleic Acid Atoms | |
Solvent Atoms | 443 |
Heterogen Atoms | 38 |
Software
Software | |
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Software Name | Purpose |
DENZO | data reduction |
CNS | refinement |
SCALEPACK | data scaling |
CNS | phasing |